Question: Help core: 6/15 6/15 answered Question 7 ;core: 6/15 6/15 answered Question 7 Suppose that textbook weights are normally distributed. You measure 31 textbooks' weights,

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core: 6/15 6/15 answered Question 7

;core: 6/15 6/15 answered Question 7 Suppose that textbook weights are normally distributed. You measure 31 textbooks' weights, and find they have a mean weight of 67 ounces. Assume the population standard deviation is 3.7 ounces. Based on this, construct a 90% confidence interval for the true population mean textbook weight. Round answers to 2 decimal places. Question Help: Written Example E Message instructor Jump to Answer

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